Cashco 1000 HP Differential - Manual (Page 12)

12 IOM-1000HP-Dif fer en tial
7. Not able to maintain setpoint.
Possible Causes Remedies
A. Diaphragm may be bent due to pressure A. Make sure to prevent system reversal.
reversal.
8. Excess leakage:
Possible Causes Remedies
A. Faulty seating surfaces. A1. Seat has been nicked by welding splatters.
A2. Composition seat is damaged.
A3. Composition seat driven into metal seat surface
due to overpressure.
B. Outlet pressure setting too low for inlet B. Refer to Technical Bulletin.
pressure.